Hello again, The decision making circuit probably draws less than 10 to 20 milli amps above about 8 volts. Less than 8 volts pretty much nothing. The core decision making circuit is pretty much a very ingenious single zener diode controlling a bipolar transistor circuit.
When the voltage is high enough to engage the large internal Bosch Relay, you should probably add some milli-amps of holding current for the relay coil. I forgot the relay coil current without going through my notes but it really is not very much. If you need a number... I would say less than 175mA max for the full-on engaged device. cheers, skipp > AA8K73 GMail <aa8...@...> wrote: > > > Just curious, what is the current drain of the LVD 12-30 and LVD > 12-75 when operating? Have you had a chance to measure it? It > isn't mentioned on their spec sheet. > > > skipp025 wrote: > > > > > Just between you and me... the only difference between the 30 > > and 75 amp model is the size of the internal disconnect relay > > (made by Bosch). And I reverse engineered both these model and > > they are pretty well designed (thought out) and constructed. > > > > I "try" to run a tight ship on a number of very remote location > > solar only sites... but even as fool-proof as I like to try > > and make things... I have these units protecting my battery > > bank(s). A few times a year some event from left field will > > fart off the charging system(s) and the LVD action prevents > > the equipment from completely draining and damaging the > > batteries. > > >
